Process

WIKA
Part of your business

Pressure, temperature and level measurement solutions from WIKA are components integrated in the business processes of our customers.

This is why we consider ourselves to be not just suppliers of measurement components but rather more a competent partner that offers comprehensive solutions in close co-operation with our customers – customised and precisely designed products for the exact requirement.

FAQ

Force transducers

What is a nominal measuring path?

The nominal measuring path is the spring travel of the outer force application points, or the surfaces of the force transducer, in the measuring direction relative to each other and due to a load with nominal force.

How does a temperature change of 10 K affect the characteristic value?

A change in the ambient temperature, Ti, by 10 K within a defined temperature range, after setting stationary, gradient-free conditions, causes a relative change in the characteristic value of the force transducer.

What is a nominal force?

The nominal force is the largest force for which the force transducer is nominally designed and up to which the metrological specifications of the manufacturer are complied with. This is also referred to as the so-called “full scale value (FS)”.

What is a relative linearity deviation?

The relative linearity deviation indicates the magnitude of the maximum deviation of the characteristic line of a force transducer from the reference line (BFSL) determined with increasing force, with reference to the end value of the measuring range.

What is a relative reversibility error (hysteresis)?

A relative reversibility error is the difference between the output signals of an increasing and decreasing series at the same force, F, relative to the output signal less the zero signal with increasing force, in the installed condition.

How is a hysteresis determined?

To determine the hysteresis, the load cycle up to the nominal force must be recorded. The maximum hysteresis, vmax, and the force measuring range used must be specified.

What is a nominal characteristic value?

The nominal characteristic value is the output signal of the force transducer at nominal load in mV/V (with non-amplified measuring bridge) or in mA or in V (with integrated or mounted measuring amplifier, e.g. 20 mA or 10 V).

What is a rated temperature range?

The rated temperature range is the ambient temperature range in which the force transducer complies with the error limits of the temperature-dependent specifications.

What is a service temperature range?

The service temperature range is the range of ambient temperatures in which the force transducer may be operated, accepting larger error limits, without significant enduring changes in its metrological characteristics being detectable once the force transducer is reused within the rated temperature range.

What is a storage temperature range?

The storage temperature range is the range in the ambient temperature in which the force transducer may be stored mechanically and electrically unloaded, without any significant changes in its metrological characteristics being detectable once the force transducer is reused within the rated temperature range.

What is a limit force?

The limit force is the force above which significant changes in the metrological characteristics of the force transducer must be expected.

What is a breaking load?

The breaking load is the force of the force transducer above which mechanical destruction is to be expected.

What defines the case ingress protection in accordance with DIN EN 60529?

The case ingress protection in accordance with DIN EN 60529 indicates to what extent the force transducer is protected against moisture and dust and also the penetration of foreign bodies.

What is a zero signal?

The zero signal is the output signal of the unloaded force transducer.